Boat Design

Lithium Charlatanism

It's great to see electrification taking off, as was definitely evident at a recent boat show. It's a little less great to see how much charlatanism and huckstership have tainted the nascent field of marine lithium batteries and the equipment that uses them.
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This 1100 W electric outboard is equivalent to a 3 hp gas engine!
1100 W is 1.475 hp, by the literal definition of horsepower which is 1 hp = 745.7 W. Stop lying.
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Risk mitigation philosophies from the radiation world

Quite a few issues of safety, in the yachting world, come down to the preferences of the skipper and crew. There will never be universal agreement on how (or if) to use tethers, or on where a life raft should be kept, or on whether an extra EPIRB is a better investment than an AIS-B transponder upgrade.

We can, however, apply some general principles of risk analysis and risk mitigation at the design stage. The maritime world already has some ways of figuring this out, but for today, I think I'll shake things up a bit with some principles from a different field: ionizing radiation.

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